Orbit Controls

Video Lecture

Orbit Controls Orbit Controls

Description

Orbit controls allow the camera to orbit around a target.

Start Code

./src/server/server.ts

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import express from "express"
import path from "path"
import http from "http"

const port: number = 3000

class App {

    private server: http.Server
    private port: number

    constructor(port: number) {
        this.port = port
        const app = express()
        app.use(express.static(path.join(__dirname, '../client')))
        app.use('/build/three.module.js', express.static(path.join(__dirname, '../../node_modules/three/build/three.module.js')))
        app.use('/jsm/controls/OrbitControls', express.static(path.join(__dirname, '../../node_modules/three/examples/jsm/controls/OrbitControls.js')))
        app.use('/jsm/libs/stats.module', express.static(path.join(__dirname, '../../node_modules/three/examples/jsm/libs/stats.module.js')))
        this.server = new http.Server(app);
    }

    public Start() {
        this.server.listen(this.port, () => {
            console.log( `Server listening on port ${this.port}.` )
        })
    }

}

new App(port). Start()

./src/client/client.ts

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import * as THREE from '/build/three.module.js'
import { OrbitControls } from '/jsm/controls/OrbitControls'
import Stats from '/jsm/libs/stats.module'

const scene: THREE.Scene = new THREE.Scene()
const axesHelper = new THREE.AxesHelper(5)
scene.add(axesHelper)

var light = new THREE.HemisphereLight();
scene.add(light);

const camera: THREE.PerspectiveCamera = new THREE.PerspectiveCamera(75, window.innerWidth / window.innerHeight, 0.1, 1000)

const renderer: THREE.WebGLRenderer = new THREE.WebGLRenderer()
renderer.setSize(window.innerWidth, window.innerHeight)
document.body.appendChild(renderer.domElement)

const controls = new OrbitControls(camera, renderer.domElement)
//controls.addEventListener('change', () => console.log("Controls Change")) //this line is unnecessary if you are already re-rendering within the animation loop 
//controls.addEventListener('start', () => console.log("Controls Start Event"))
//controls.addEventListener('end', () => console.log("Controls End Event"))

// controls.autoRotate = true
// controls.autoRotateSpeed = 10
//controls.enableDamping = true
//controls.dampingFactor = .01
// controls.enableKeys = true
// controls.keys = {
//     LEFT: 37, //left arrow
//     UP: 38, // up arrow
//     RIGHT: 39, // right arrow
//     BOTTOM: 40 // down arrow
// }
// controls.mouseButtons = {
//     LEFT: THREE.MOUSE.ROTATE,
//     MIDDLE: THREE.MOUSE.DOLLY,
//     RIGHT: THREE.MOUSE.PAN
// }
// controls.touches = {
//     ONE: THREE.TOUCH.ROTATE,
//     TWO: THREE.TOUCH.DOLLY_PAN
// }
//controls.screenSpacePanning = true
//controls.minAzimuthAngle = 0
//controls.maxAzimuthAngle = Math.PI / 2
//controls.minPolarAngle = Math.PI / 2
//controls.maxPolarAngle = Math.PI - (Math.PI / 2)
// controls.maxDistance = 4;
// controls.minDistance = 2;

const geometry: THREE.BoxGeometry = new THREE.BoxGeometry()
const material: THREE.MeshBasicMaterial = new THREE.MeshBasicMaterial({ color: 0x00ff00, wireframe: true })

const cube: THREE.Mesh = new THREE.Mesh(geometry, material)
scene.add(cube)

camera.position.z = 2

window.addEventListener('resize', onWindowResize, false)
function onWindowResize() {
    camera.aspect = window.innerWidth / window.innerHeight
    camera.updateProjectionMatrix()
    renderer.setSize(window.innerWidth, window.innerHeight)
    render()
}

const stats = Stats()
document.body.appendChild(stats.dom)

var animate = function () {
    requestAnimationFrame(animate)

    controls.update()

    render()

    stats.update()
};

function render() {
    renderer.render(scene, camera)
}
animate();

./src/client/tsconfig.json

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{
    "compilerOptions": {
        "target": "ES6",
        "module": "ES6",
        "outDir": "../../dist/client",
        "baseUrl": ".",
        "paths": {
            "/build/three.module.js": ["../../node_modules/three/src/Three"],
            "/jsm/*": ["../../node_modules/three/examples/jsm/*"],
        },
        "moduleResolution": "node"
    },
    "include": [
        "**/*.ts"
    ]
}

KeyCodes

Azimuth